There are two books by Miriam Nelson who is, i think, an exercise physiologist called:
Strong Women Stay Young and
Strong Women stay Slim.
She outlines an entire free weights and exercise program that you can do at home with a modest expenditure of money for weights, etc. She includes lots of research as to why it's so important for women to do this type of exercise, but you don't have to read the book from cover to cover to learn how to do the program. It just has lots of good info.
They're not new books, but they're not old either, so i'd try your public library first to see if you like her approach. Then you'd maybe have to special order the book(s) as i don't know if they are kept as regular stock in bookstores anymore.
Good Luck!!